来自Premise SQL Server上的Azure链接的SQL Server-MSDTC异常

Question

1. I have a SQL Db in Azure
2. Then created a linked server for the SQL Db from the on premises SQL Server
3. I am using a table present in the Azure SQL db in a SP in on premises SQL db

This setup works fine except when there MSDTC service is running.

When the 'DTC' service is running, I am getting the following exception

Top level exception message : System.ServiceModel.FaultException: The OLE DB provider "SQLNCLI11" for linked server "Azure_SQLDb" reported an error. One or more arguments were reported invalid by the provider. The operation could not be performed because OLE DB provider "SQLNCLI11" for linked server "Azure_SQLDb" was unable to begin a distributed transaction. OLE DB provider "SQLNCLI11" for linked server "Azure_SQLDb" returned message "The parameter is incorrect.".

I dont need the Azure linked server for any of the DTC transaction, so I tried disabling this option in the linked server properties to see if it helps but it did not help.

I read that we cant have MSDTC connection to the azure SQL db, which is good with me as I will not have any transaction involving between my local db and azure sql db.

I would like to have a solution to run DTC service running in my server machine when there is a linked server connection to the azure sql db.

Answer 1

@dks The problem you are hitting is not normal - generally it would only happen if your application is trying to start a distributed transaction to coordinate state changes. (Sometimes applications use distributed transactions to coordinate state change between an app and data tier, so perhaps that is happening in your case). If you are running from EF or similar, please check to make sure that it is not starting a DTC on your behalf.

In any event, I suggest you move to the latest OLEDB provider. Last year Microsoft introduced an updated provider and you can download it here:

https://www.microsoft.com/en-us/download/details.aspx?id=56730

Answer 2

Azure SQL Database does not support distributed transactions.

Distributed Transactions in SQL Database

SQL Database does not support distributed transactions, which are transactions that multiple transaction managers (multiple resources). For more information, see Distributed Transactions (ADO.NET) . This means that SQL Database doesn't allow Microsoft Distributed Transaction Coordinator (MS DTC) to delegate distributed transaction handling. Because of this you can't use ADO.NET or MSDTC to commit or rollback a single transaction that spans across multiple SQL Databases or a combination of SQL Database and an on-premise SQL Server.

For more details, you can see here : Handling Transactions in Windows Azure SQL Database . Reference blob: Distributed transaction similar to MSDTC between SQL Server azure and MSMQ\\queue azure.

I think there is no solution can help you.

Hope this can helps you.